CN214335148U - Novel circuit breaker mechanical characteristic measurement auxiliary device - Google Patents
Novel circuit breaker mechanical characteristic measurement auxiliary device Download PDFInfo
- Publication number
- CN214335148U CN214335148U CN202022585372.9U CN202022585372U CN214335148U CN 214335148 U CN214335148 U CN 214335148U CN 202022585372 U CN202022585372 U CN 202022585372U CN 214335148 U CN214335148 U CN 214335148U
- Authority
- CN
- China
- Prior art keywords
- unit
- resistor
- output end
- module
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a novel auxiliary device for measuring the mechanical characteristics of a circuit breaker, which comprises a test signal input module, a reference signal generation module, a test signal amplification module and a switch module; the test signal input module is connected with the test signal amplification module, the reference signal generation module is connected with the test signal amplification module, and the test signal amplification module is connected with the switch module. The embodiment of the utility model provides a can realize the quick recognition function to circuit breaker divide-shut brake state, possess characteristics such as low price, test error are little, the popularization scope is big.
Description
Technical Field
The utility model relates to a transformer primary equipment tests technical field, especially relates to a novel circuit breaker mechanical properties measure auxiliary device.
Background
When a circuit breaker characteristic tester appearing on the market measures mechanical characteristics such as switching-on and switching-off time, synchronization, speed and the like of a circuit breaker, grounding switches on two sides of the circuit breaker are not required to be disconnected, and the circuit resistance during switching-on of the circuit breaker is far smaller than that of the grounding switch circuit resistance to complete identification and judgment of the switching-on and switching-off characteristics of the circuit breaker.
Disclosure of Invention
The utility model aims to overcome the not enough of prior art, the utility model provides a novel circuit breaker mechanical properties measures auxiliary device can realize the quick recognition function to circuit breaker divide-shut brake state, possesses characteristics such as low price, testing error are little, the popularization scope is big.
Correspondingly, the utility model provides a novel circuit breaker mechanical characteristic measurement auxiliary device, the device includes test signal input module, reference signal generation module, test signal amplification module and switch module; wherein the content of the first and second substances,
the test signal input module is connected with the test signal amplification module, the reference signal generation module is connected with the test signal amplification module, and the test signal amplification module is connected with the switch module.
Optionally, the test signal input module includes a hall current sensor, and a test end of the hall current sensor is connected to a series conductor of the circuit breaker on the power grid side.
Optionally, the reference signal generating module includes an ac voltage-reducing unit, a forward voltage-dividing output unit, and a reverse voltage-dividing output unit;
the input end of the alternating current voltage reduction unit is connected with peripheral power supply equipment, the output end of the alternating current voltage reduction unit is connected with the power supply end of the forward voltage division output unit, and the output end of the forward voltage division output unit is connected with the input end of the test signal amplification module; the output end of the alternating current voltage reduction unit is connected with the power supply end of the reverse voltage division output unit, and the output end of the reverse voltage division output unit is connected with the input end of the test signal amplification module.
Optionally, the ac voltage reduction unit includes a step-down transformer T1 and a step-down transformer T2;
the input end of the step-down transformer T1 is connected with the peripheral power supply equipment, and the output end of the step-down transformer T1 is connected with the power supply end of the forward voltage division output unit;
the input end of the step-down transformer T2 is connected with the peripheral power supply equipment, and the output end of the step-down transformer T2 is connected with the power supply end of the reverse voltage division output unit.
Optionally, the test signal amplifying module includes a signal amplifying unit and a signal comparing unit;
the input end of the signal amplification unit is connected with the output end of the Hall current sensor, the output end of the signal amplification unit is connected with the input end of the signal comparison unit, the output end of the forward voltage division output unit is connected with the input end of the signal comparison unit, the output end of the reverse voltage division output unit is connected with the input end of the signal comparison unit, and the output end of the signal comparison unit is connected with the switch module.
Optionally, the signal amplifying unit includes an operational amplifier U1, a resistor R1, a resistor R2, and a resistor R3;
the negative electrode input end of the operational amplifier U1 is connected with the output end of the Hall current sensor through the resistor R1, the positive electrode input end of the operational amplifier U1 is grounded through the resistor R2, and the resistor R3 is connected between the negative electrode input end and the output end of the operational amplifier U1.
Optionally, the signal comparison unit includes a comparator U2, a comparator U3, a diode D1, a diode D2, a resistor R4, a resistor R5, a resistor R6, and a resistor R7;
the positive input end of the comparator U2 is connected with the output end of the operational amplifier U1 through the resistor R4, the negative input end of the comparator U2 is connected with the output end of the forward voltage division output unit through the resistor R5, and the output end of the comparator U2 is connected with the control end of the switch module through the diode D1;
the negative input end of the comparator U3 is connected with the output end of the operational amplifier U1 through the resistor R6, the positive input end of the comparator U3 is connected with the output end of the reverse voltage division output unit through the resistor R7, and the output end of the comparator U3 is connected with the control end of the switch module through the diode D2.
Optionally, the switching module includes a switching transistor Q1;
the base terminal of the switching triode Q1 is connected with the diode D1, the base terminal of the switching triode Q1 is connected with the diode D2, the collector terminal of the switching triode Q1 is connected with the interface terminal of the mechanical property tester, and the emitter terminal of the switching triode Q1 is directly grounded.
The embodiment of the utility model provides an in, combine test signal to enlarge module and switch module and can realize the quick recognition function to circuit breaker divide-shut brake state, detect for the normal access of mechanical properties tester and provide the guarantee, and the components and parts that whole auxiliary device adopted are simple easily obtained, possess characteristics such as low price, the maintenance degree of difficulty is low, testing error is little, popularization range is big.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural composition diagram of a novel mechanical characteristic measurement auxiliary device of a circuit breaker in an embodiment of the present invention;
fig. 2 is a schematic view of a specific structural composition of the novel auxiliary device for measuring mechanical characteristics of the circuit breaker in an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal circuit structure of the novel mechanical characteristic measurement auxiliary device for the circuit breaker in the embodiment of the present invention;
fig. 4 is a specific circuit diagram of the reference signal generating module in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a novel auxiliary device for measuring mechanical characteristics of a circuit breaker according to an embodiment of the present invention.
As shown in fig. 1, the novel auxiliary device for measuring mechanical characteristics of a circuit breaker comprises a test signal input module, a reference signal generation module, a test signal amplification module and a switch module.
Basically, the test signal input module is connected to the test signal amplification module, the reference signal generation module is connected to the test signal amplification module, and the test signal amplification module is connected to the switch module. In a specific implementation process, the test signal input module is used for acquiring a current test signal of a breaker on a power grid side in an opening state or a closing state, the reference signal generation module can generate a reference signal set by a power technician by using a voltage signal of peripheral power equipment, the test signal amplification module is used for generating a comparison result of the reference signal and the current test signal and feeding the comparison result back to the switch module, and finally the switch module directly judges the current working state of the breaker and simultaneously realizes access test of a mechanical characteristic tester during closing of the breaker.
Fig. 2 shows the embodiment of the present invention provides a schematic diagram of the specific structure composition of the novel mechanical characteristic measurement auxiliary device for circuit breaker, fig. 3 shows the embodiment of the present invention provides an internal circuit structure schematic diagram of the novel mechanical characteristic measurement auxiliary device for circuit breaker, which can expand and explain each module shown in fig. 1 as follows:
specifically, the test signal input module comprises a hall current sensor, a test end of the hall current sensor is connected to a series conductor of a circuit breaker on the power grid side, and the hall current sensor is specified to normally flow through a current signal on the power grid side when the circuit breaker is in a closing state, and conversely, the hall current sensor is isolated from the current signal on the power grid side when the circuit breaker is in an opening state.
Further, fig. 4 shows a specific circuit schematic diagram of a reference signal generating module in an embodiment of the present invention, where the reference signal generating module includes an ac voltage reducing unit, a forward voltage dividing output unit, and a reverse voltage dividing output unit; the input end of the alternating current voltage reduction unit is connected with peripheral power equipment, the output end of the alternating current voltage reduction unit is connected with the power supply end +15V of the forward voltage division output unit, and the output end + Vref of the forward voltage division output unit is connected with the input end of the test signal amplification module; the output end of the alternating current voltage reduction unit is connected with the power supply end-15V of the reverse voltage division output unit, and the output end-Vref of the reverse voltage division output unit is connected with the input end of the test signal amplification module.
Specifically, the alternating current voltage reduction unit comprises a voltage reduction transformer T1 and a voltage reduction transformer T2; the input end of the step-down transformer T1 is connected with the peripheral power supply equipment (P2 terminal is used as a connection port), and the output end of the step-down transformer T1 is connected with the power supply end +15V of the forward voltage division output unit; the input end of the step-down transformer T2 is connected with the peripheral power supply equipment (P2 terminal is used as a connection port), and the output end of the step-down transformer T2 is connected with the power supply end-15V of the reverse voltage division output unit. In an implementation process, only a +220V voltage signal can be separated from 220V alternating current provided by the peripheral power supply device by using the step-down transformer T1, and the +220V voltage signal is reduced to a +15V voltage signal for output; on the contrary, the step-down transformer T2 can be used to separate only the-220V voltage signal from the 220V AC power and reduce the-220V voltage signal to the-15V voltage signal for output, so as to meet the requirement of the subsequent standby function of the test signal amplifying module.
Furthermore, the test signal amplifying module comprises a signal amplifying unit and a signal comparing unit; the input end of the signal amplification unit is connected with the output end Vc of the Hall current sensor, the output end of the signal amplification unit is connected with the input end of the signal comparison unit, the output end + Vref of the forward voltage division output unit is connected with the input end of the signal comparison unit, the output end-Vref of the reverse voltage division output unit is connected with the input end of the signal comparison unit, and the output end of the signal comparison unit is connected with the switch module.
Specifically, the signal amplification unit comprises an operational amplifier U1, a resistor R1, a resistor R2 and a resistor R3; the negative input end of the operational amplifier U1 is connected with the output end Vc of the Hall current sensor through the resistor R1, the positive input end of the operational amplifier U1 is grounded through the resistor R2, and the resistor R3 is connected between the negative input end and the output end of the operational amplifier U1. In the implementation process, the operational amplifier U1 can perform voltage conversion and signal amplification processing on the weak current signal acquired by the hall current sensor, specifically, when the output end Vc is at a high level, the operational amplifier U1 can output a voltage signal of-15V, and when the output end Vc is at a low level, the operational amplifier U1 can output a voltage signal of +15V, so that the signal comparison unit can respond and compare quickly in time.
Specifically, the signal comparison unit comprises a comparator U2, a comparator U3, a diode D1, a diode D2, a resistor R4, a resistor R5, a resistor R6 and a resistor R7; the positive input end of the comparator U2 is connected with the output end of the operational amplifier U1 through the resistor R4, the negative input end of the comparator U2 is connected with the output end + Vref of the forward voltage division output unit through the resistor R5, and the output end of the comparator U2 is connected with the control end of the switch module through the diode D1, so that a forward comparison loop is formed, and comparison processing is mainly performed on the +15V voltage signal; the negative input end of the comparator U3 is connected with the output end of the operational amplifier U1 through the resistor R6, the positive input end of the comparator U3 is connected with the output end-Vref of the reverse voltage division output unit through the resistor R7, and the output end of the comparator U3 is connected with the control end of the switch module through the diode D2, so that a reverse comparison loop is formed, and comparison processing is mainly performed on the-15V voltage signal. In the implementation process, based on the forward conduction performance of the diode, the forward comparison loop and the reverse comparison loop are mutually standby loops, and can be matched with the signal amplification unit to make efficient and accurate identification and judgment on the test signal of the Hall current sensor.
Specifically, the switching module comprises a switching transistor Q1; the base terminal of the switching triode Q1 is connected with the diode D1, the base terminal of the switching triode Q1 is connected with the diode D2, the collector terminal of the switching triode Q1 is connected with a mechanical property tester interface terminal P1, and the emitter terminal of the switching triode Q1 is directly grounded. In implementation, the switching transistor Q1 will remain in a conducting state when the signals of the forward comparison loop and the reverse comparison loop are alternately output, which indicates that the circuit breaker has been closed, and the mechanical characteristic tester may allow access to complete the mechanical characteristic measurement of the circuit breaker.
The embodiment of the utility model provides an in, combine test signal to enlarge module and switch module and can realize the quick recognition function to circuit breaker divide-shut brake state, detect for the normal access of mechanical properties tester and provide the guarantee, and the components and parts that whole auxiliary device adopted are simple easily obtained, possess characteristics such as low price, the maintenance degree of difficulty is low, testing error is little, popularization range is big.
The above detailed description is made on the novel auxiliary device for measuring mechanical characteristics of the circuit breaker provided by the embodiment of the present invention, and the detailed examples are adopted herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. A novel auxiliary device for measuring mechanical characteristics of a circuit breaker is characterized by comprising a test signal input module, a reference signal generation module, a test signal amplification module and a switch module; wherein the content of the first and second substances,
the test signal input module is connected with the test signal amplification module, the reference signal generation module is connected with the test signal amplification module, and the test signal amplification module is connected with the switch module.
2. The novel mechanical characteristic measurement auxiliary device for the circuit breaker as claimed in claim 1, wherein the test signal input module comprises a hall current sensor, and a test end of the hall current sensor is connected to a series conductor of the circuit breaker on the power grid side.
3. The novel mechanical characteristic measurement auxiliary device for the circuit breaker is characterized in that the reference signal generation module comprises an alternating current voltage reduction unit, a forward voltage division output unit and a reverse voltage division output unit;
the input end of the alternating current voltage reduction unit is connected with peripheral power supply equipment, the output end of the alternating current voltage reduction unit is connected with the power supply end of the forward voltage division output unit, and the output end of the forward voltage division output unit is connected with the input end of the test signal amplification module; the output end of the alternating current voltage reduction unit is connected with the power supply end of the reverse voltage division output unit, and the output end of the reverse voltage division output unit is connected with the input end of the test signal amplification module.
4. The novel mechanical characteristic measurement auxiliary device for circuit breakers of claim 3, wherein said ac voltage reducing unit comprises a step-down transformer T1 and a step-down transformer T2;
the input end of the step-down transformer T1 is connected with the peripheral power supply equipment, and the output end of the step-down transformer T1 is connected with the power supply end of the forward voltage division output unit;
the input end of the step-down transformer T2 is connected with the peripheral power supply equipment, and the output end of the step-down transformer T2 is connected with the power supply end of the reverse voltage division output unit.
5. The novel mechanical characteristic measurement auxiliary device for the circuit breaker is characterized in that the test signal amplification module comprises a signal amplification unit and a signal comparison unit;
the input end of the signal amplification unit is connected with the output end of the Hall current sensor, the output end of the signal amplification unit is connected with the input end of the signal comparison unit, the output end of the forward voltage division output unit is connected with the input end of the signal comparison unit, the output end of the reverse voltage division output unit is connected with the input end of the signal comparison unit, and the output end of the signal comparison unit is connected with the switch module.
6. The novel mechanical characteristic measurement auxiliary device for the circuit breaker as claimed in claim 5, wherein the signal amplification unit comprises an operational amplifier U1, a resistor R1, a resistor R2 and a resistor R3;
the negative electrode input end of the operational amplifier U1 is connected with the output end of the Hall current sensor through the resistor R1, the positive electrode input end of the operational amplifier U1 is grounded through the resistor R2, and the resistor R3 is connected between the negative electrode input end and the output end of the operational amplifier U1.
7. The novel mechanical characteristic measurement auxiliary device for the circuit breaker is characterized in that the signal comparison unit comprises a comparator U2, a comparator U3, a diode D1, a diode D2, a resistor R4, a resistor R5, a resistor R6 and a resistor R7;
the positive input end of the comparator U2 is connected with the output end of the operational amplifier U1 through the resistor R4, the negative input end of the comparator U2 is connected with the output end of the forward voltage division output unit through the resistor R5, and the output end of the comparator U2 is connected with the control end of the switch module through the diode D1;
the negative input end of the comparator U3 is connected with the output end of the operational amplifier U1 through the resistor R6, the positive input end of the comparator U3 is connected with the output end of the reverse voltage division output unit through the resistor R7, and the output end of the comparator U3 is connected with the control end of the switch module through the diode D2.
8. The novel mechanical characteristic measurement auxiliary device for the circuit breaker as claimed in claim 7, wherein the switch module comprises a switching transistor Q1;
the base terminal of the switching triode Q1 is connected with the diode D1, the base terminal of the switching triode Q1 is connected with the diode D2, the collector terminal of the switching triode Q1 is connected with the interface terminal of the mechanical property tester, and the emitter terminal of the switching triode Q1 is directly grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022585372.9U CN214335148U (en) | 2020-11-10 | 2020-11-10 | Novel circuit breaker mechanical characteristic measurement auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022585372.9U CN214335148U (en) | 2020-11-10 | 2020-11-10 | Novel circuit breaker mechanical characteristic measurement auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214335148U true CN214335148U (en) | 2021-10-01 |
Family
ID=77894439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022585372.9U Active CN214335148U (en) | 2020-11-10 | 2020-11-10 | Novel circuit breaker mechanical characteristic measurement auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214335148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
-
2020
- 2020-11-10 CN CN202022585372.9U patent/CN214335148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103063979B (en) | Load open-circuit detection circuit | |
| CN203537358U (en) | One-key switching circuit | |
| CN103105572B (en) | Device for testing IGBT module | |
| CN102377326B (en) | Insulated gate bipolar transistor (IGBT)-bridge-switch-topology-based driving circuit and protection module thereof | |
| CN214335148U (en) | Novel circuit breaker mechanical characteristic measurement auxiliary device | |
| CN216086450U (en) | Distribution switch circuit who possesses current sampling and voltage sampling | |
| CN115951207B (en) | Testing circuit and system of solid state relay | |
| CN105553245A (en) | Soft start circuit | |
| CN201449441U (en) | Integrated tester for action voltage of DC switch coil | |
| CN117013495A (en) | Overcurrent protection circuit, related power adapter and electronic equipment | |
| CN105675977A (en) | Electric energy meter and method for pre-stage and post-stage stage power failure detection and control of power switching-off by magnetic latching relay and data storage | |
| CN205749797U (en) | Audion reverse characteristic tester | |
| CN208188220U (en) | A kind of novel load detection circuit | |
| CN202351354U (en) | Controlled silicon detecting device | |
| CN108718109A (en) | A kind of line feed terminals and residual voltage module detection circuit | |
| CN212391534U (en) | Current detection circuit | |
| CN208283510U (en) | A kind of circuit, device and multimeter measuring thyristor | |
| Cai et al. | Design of IGBT parameter automatic test system based on LabVIEW | |
| CN220043218U (en) | Self-energy-taking and current sampling circuit and device for current transformer | |
| CN207396699U (en) | A kind of AC220V voltage detecting circuits for fire-fighting equipment power supply | |
| CN202502212U (en) | Testing system for discrete semiconductor device | |
| CN107390029B (en) | Device for eliminating reverse electromotive force during inductive load DCR measurement | |
| CN111969561A (en) | SiC MOSFET IPM rapid short-circuit protection circuit | |
| CN111983415A (en) | Power device junction temperature on-line measuring system | |
| CN217332608U (en) | Sampling and conditioning circuit of high-voltage electroscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |